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4 Sheets-Sheet 1,. G.L.ROBY- GULTIVATOR (N0 Model.)

Patented July 27, 1897.

(No Model.) 4 Sheets-Sheet G.. L. ROBY.J4 GULTIVATOR.

No. 587,067. Patented July 27, 1897.

LQ/W3 XMB/@m w 4 Sheetsf-Sheet 3. G. L. ROBY.

GULTIVATOR (No Model.)

Patented July 27, 1897.

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(No Model.) 4 sheets-Sheet 4.

G'LRoBY.

GULTIVATOR. No. 587,067. Patented July 27, 1897.

WIT-MEE- u l iig@ NIrnn TA'Iss AfrnN'r .Imca

GEOR IE L. ROBY, or ALBION, MICHIGAN, AssIeNoR To THE GALE MANU- FAOTURING COMPANY, or sAME PLAGE.

`CU LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 587,067, dated July 27, 189'?.

Application tiled March 10, 1897. Serial No. 626,802. (No model.) i i T all whom it may concern.' lower ends pivoted to the cultivator-frame,

Be it known that I, GEORGE L. ROBY, a citias shown. The cultivator-frame C is shown zen of the United States, residing at Albion, in these figures as rigidly secured to the axle in the county of Calhoun'and State of Michi- A by means of collars c c on said frame surgan, have invented certain new and useful rounding theaxle and secured thereto by set- 55 Improvements in Cultivators; and I do herescrews. n by declare the following to be a full, clear, F F represents a pair of arms for raising and exact description of the invention, such or depressing the cultivator-frame, said arms as will enable othersskilled in the art to having a fixed relation to the said frame.

1o which it appertains to make and use the same. In the iigures just referred tov said arms are 6o My invention consists in the novelfeatures rigidly secured to the axle A by means of of construction and combination of parts collars encircling said axle and provided with hereinafter described, reference being had to set-screws. This construction is a conventhe accompanying drawings, which show one ient one, as it enables the said arms to be form in which I have contemplated embodyadjusted with respect to the cultivator-frame. 65 ing my invention, and said invention is fully The upper ends of said arms are preferably disclosed in the following description and provided with apertures for the passage of a claims. bolt or pin.

Referring to the said drawings, Figure l G represents a guide-rod which is secured zo represents a vertical longitudinal sectional to the said arms by means of a bolt g, which 7o View ofacultivator embodyingmy invention, passes through the apertures therein and showing the cultivator frame and shovels through a sleeve g on the lower end of said raised. Fig. 2 i's a detail view of a portion rod.

of the construction in the position which it H represents what I `term the fulcrumoccupies when the frame and shovels are in plate,7 provided with a sleeve 7L, engaging and 75 working position. Fig. 3 is a detail rear view sliding on the guide-rod G and provided on of a portion of the mechanism. Fig. 4 is a its upper side with an upwardly-extending rear View of the cultivator shown in Fig. l. projection h at each end, preferably rounded,

Fig. 5 is a detail View showing a slightly difas shown, to engage seats or bearings d on 3o ferent method of arranging the cultivatorthe under side of the seat-support D, either 8o frame. Fig. 6 is an enlarged view of the culformed therein'or secured thereto, as shown. tivator-frame, showing the clip for attaching A coiled spring I- surrounds the sleeve h the cultivatorshovels- Fig. 7 is a top plan and guide-rod G between the fulcrum-plate -view of one of said clips. Fig. S is a perand sleeve g and is adapted to exert a strong spective view of the parts of the clip sepadownward pressure on the arms F F, which 85 rated and portions of the frame and shovel. will either tend to hold the plows out of the Fig. 9 is a detail sectional view of a part of ground or press them into the soil, according the clip. Fig. l() is a top plan view of the as the arms F F are forward or back of the cultivator.- axle A, as will be readily seen by reference 4o In the drawings, A represents the axle of to the drawings. In moving the arms F F 9o the cultivator; BB, the supportingewheels; from one position to the other the lower end C, the cultivator-frame, of any usual or preof rod Gmoves with them and thus produces ferred construction and provided with shova rocking movement of the fulcrum-plate I-I, els c c. A which ordinarily has only one of its lugs h LD represents 'the tongue, provided with a in engagement with its respective seat or 95 rearwardly-projecting b'ar D, supporting the bearing d. As the fulcrum-plate is rocked drivers seat E and pivotally connected with the other lug h will be brought into 'its seat, respect to the cultivator-frame. n In the form and as soon as this is accomplished the furshown in Figs. l toll, inclusive, the tongue ther movement of said plate in the same diis provided with arms d d, which have their rection will remove the lug formerly seated roo -from its bearing, and thus transfer the bearing of the plate from one end to the other, as will be readily seen.

In order to move the arms F F from a position forward of the axle to a position in rear of the same, I employ a hand-lever K, pivoted to the tongue I), provided with the usual ratehct-and-pawl construction for locking the same and having its lower end connected by a rod 7e with the said arms. I conveniently provide the sleeve g of the rod G with a perforated lug or ear g below the same and pass the rod 7e through said ear, providing it on the rear side with a nut, and I prefer to provide it on the front side of said lug with a spring 7;', interposed between the ear g2 and a shoulder t2 on said rod.

In Fig. l the shovels and cultivator-frame are shown in raised position. In order to depress the shovels, the hand-lever is moved so as to throw the lower end ol rod G and the arms F F rearwardly. As soon as the said parts have moved past a position in line with the axle the force of the spring will be exerted to press the arms F F rearwardly an d will force the cultivator frame and shovels downwardly, at the same time chan ging the bearing-point of the fulcrum-plate, as previously described. Fig. 2 shows the parts in this position. To raise the shovels, the handlever is moved so as to draw the arms F F and lower end of rod G forward of the axle. The spring 7s acts as a cushion when the rod 7n is moved rearwardly, and I may provide said rod with an additional spring k2 in rear of the ear g2,if it is desired, as shown in Fig. 2.

In Fig. 5 I have shown a slightly-modiied construction which dillers from the form just described only in that the frame of the cultivator is pivotally mounted on the axle and the arms F' F are made integral with or secured to portions of the frame. In this construction the tongue is connected rigidly with the axle.

In Figs. G to inclusive, I have shown a clip for attaching the shovels to thc cultivator-frame. C is the cultivator-frame, and c' c' are two horizontal frame-bars arranged parallel one above the other at the rear ot' said frame. The tooth-clip is composed of three parts-a bolt L, having a recess or slot in its head to receive the shanks of the shovel c, the spacing-block L', having recessesl Zin its front side to receive the shank and projections Z' Z on its rear side to enter between the frame-bars c c', and the yoke L2, adapted to engage the rear side ot the frame-bars c e' and having a central aperture for the passage of the bolt and flan ges Z2 Z2 to enga-ge the frame-bars above and below the same to prevent them from spreading. lVhen the parts are assembled, a nut is placed on the bolt L, and by tightening the said nut the shank of the shovel will be securely held in position. The shovel can be adjusted vertically and can also be moved laterally along the frame-bars c c to any desired position.

It is usual in many eultivators now in use to make the horizontal portions of the shanks of shovels of diil'erent lengths, so that when the shovels are secured to the frame the shovels will be in different lines. It will be observed that my improved clips can be used both on the front and on the rear side of the frame-bars e' c', and by making all the shovelshanks alike and attaching part of them in front of the bars c c' and part in rear of said bars, as shown in Fig. 10, I secure the same result that is secured in other constructions by using different styles of shanks.

W hat I claim, and desire to secure by Letters Iatent, is-

l. In a wheel-cultivator the combination with a shovelcarrying trame having a movement about a horizontal axis, and having crank-arms extending from said axis, of a compression-spring extending between said crank-arms and a ulerum-plate having two bearings upon a part of the stationary frame of the cultivator and means for moving the said crank ou t of and into alincment with the spring, substantially as described.

2. In a wheel-cultivator the combination with a shovel-carryin g frame, having a movement about a horizontal axis, and having crank-arms extending therefrom, of a compression-spring extending from said arms to a fulcrum-plate having two bearings, one on each side of the said spring upon a part of the stationary frame of the cultivator, and means for moving the said crank-arms into and out of alinement with said spring, substantially as described.

In a wheel-cultivator, the combination with a shovel-carrying frame having a vertical movement about a horizontal axis, and having crank-arms adjacent to said axis, of aguide-rod pivoted to said. arms, a fulcrumplate having two separated bearing-poil'xts adapted to engage stationary seats, and a sleeve engaging said guide-rod, a spring surrounding said guide-rod and sleeve between said fulcrum-platc and said arms, an operating-lever and connections between said lever and the said arms, substantially as described.

4t. In a wheel-cultivator, the combination with a shovel-carrying frame having a vertical movement about a horizontal axis, and provided with crank-arms adjacent to said axis, of a guide-rod pivoted to said arms, a fulcrum plate having separated bearingpoints, and a sleeve engaging said guide-rod, stationary bearing-seats for the fulcrumplate, a spring su rrounding said guide-rod and sleeve between said fulcrum-plate and said crank-arms, an operating-lever, a rod operatively connected with said lever and said arms, and a cushioning-spring interposed between said rod and its connection with said arms, substantially as described.

5. In a cultivator, the combination with the parallel horizontal supporting-bars located one above the other, of a shovel-securing clip comprising among its members, the bolt hav- IIO IIS

ing a slotted portion to receive the shank of engage the exterior of said parallel bars, suba cultivator-shovel, the spacing-block having stantially as described. 1o an aperture for the passage of Vsaid bolt, and In testimony whereof I affix my signature provided on one face with recesses to receive in presence of two Witnesses.

the said shank and on the opposite face with GEORGE L. ROBY. projections adapted to enter the space be- Witnesses: tween said parallel bars, and the yoke having CHAS. EASTMAN,

an aperture for the bolt, and having lugs to WV. D. BRUNDAGE. 

